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单词
Owl Nebula
释义
Owl Nebula
Encyclopedia
理学
行星状星云
释
Owl Nebula
夜枭星云
位于大熊星座的一个比较复杂的行星状星云。星表中的编号为M97和NGC3587。距离地球2030光年(621秒差距),视星等为9.9,年龄约8千年。又称猫头鹰星云。
Astronomy
Owl Nebula
夜枭星云
随便看
group of congruence classes
group of congruence transformations
group of covering transformations
group of curves
group of cycles
group of death
group of diffeomorphisms
Group of Eight
Group of Experts on the Scientific Aspects of Marine Pollution
group of figures
group of finite order
group of finite rank
group of finite type
group of galaxies
group of holonomy
group of homeomorphisms
group of homotopy
group of ideals
group of infinite order
group of inner automorphisms
group of inner permutations
group of integers
group of invertible elements
group of isometries
group of isotropy
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